1 2# 3# Clear out the built-in rules GNU make defines by default (such as .o targets), 4# so that we pass through all targets to Makefile.perf: 5# 6.SUFFIXES: 7 8# 9# Do a parallel build with multiple jobs, based on the number of CPUs online 10# in this system: 'make -j8' on a 8-CPU system, etc. 11# 12# (To override it, run 'make JOBS=1' and similar.) 13# 14ifeq ($(JOBS),) 15 JOBS := $(shell grep -c ^processor /proc/cpuinfo 2>/dev/null) 16 ifeq ($(JOBS),) 17 JOBS := 1 18 endif 19endif 20 21export JOBS 22 23define print_msg 24 @printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' parallel build\n' 25endef 26 27define make 28 @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) $@ 29endef 30 31# 32# Needed if no target specified: 33# 34all: 35 $(print_msg) 36 $(make) 37 38# 39# The clean target is not really parallel, don't print the jobs info: 40# 41clean: 42 $(make) 43 44# 45# All other targets get passed through: 46# 47%: 48 $(print_msg) 49 $(make) 50